イベント
セミナーのお知らせ: Kunlong LIU 氏 (Associate Professor, School of Physical Sciences, Great Bay University, Dongguan, China)
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日時：２０２５年８月６日（水）14:30～15:30
場所：東京大学工学部8号館502講義室
Eng. Bldg. 8, Room 502
講演者： Kunlong LIU 氏
(Associate Professor, School of Physical Sciences, Great Bay University, Dongguan, China)
講演題目: Taking a snapshot of the electronic wave packet with an attosecond flash: Revealing the energy-time characteristics of photoelectrons
Abstract
Timing the laser-induced ultrafast electronic dynamics without intercepting the interaction is essential for advancing attosecond physics, yet it remains a significant challenge. In this talk, I will introduce an observation scheme using isolated attosecond pulses (IAPs) for time-resolving the strong-field ionization driven by multicycle laser pulses. Our approach utilizes the interference between the electronic wave packets emitted by the driving pulse and the one produced by a time-delayed IAP. We demonstrate that the photoelectron spectral phase can be encoded in and retrieved from the spectral interference structures. Furthermore, we reveal the birth-time distributions of the photoelectrons and their distinct energy-time characteristics in multiphoton and tunneling ionization. Our study explores a promising application of IAPs for ultrafast measurement and opens a viable venue for investigating quantum dynamics with quantum phase information.
使用言語：English/英語
紹介教員：石川 顕一
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